Technology

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BABY BLUE Using human eye cells, researchers fashioned an artificial eye surface that could be used to study and test treatments for eye diseases.

Free-Photos/PIxabay

MUMMY MYSTERY The Hibbard mummy, now on display at Northwestern University, holds the body of a girl estimated to be 5 years old at death. Recent analyses might help reveal a cause of death.

Courtesy Garrett-Evangelical Theological Seminary, Evanston, IL

HISTORY MYSTERY Picasso first created this sculpture, Tête de femme de profil (Marie­-Thérèse), in plaster in 1931, but its origins in bronze were unknown. A new analysis of the metals in the bronze gave an important clue to where and when it was cast.